Abstract
Restriction endonuclease analysis of chloroplast DNA of Ae. triuncialis was carried out. Thirteen accessions had the type 2a chloroplast genome derived from Ae. caudata, eight possessed type 3 chloroplast genome of Ae. umbellulata, and the remaining five contained a new chloroplast genome (named type 2b) differing from the former two, by a 0·3 kbp insertion and four base substitutions, respectively. The accessions with type 2a and type 3 chloroplast genomes distribute in wide areas, and in both of its subspecies, eu-triuncialis and orientalis, whereas those having the type 2b chloroplast genome occur only locally in Azerbaijan, Transcaucasus. From these results, the following two conclusions are drawn; (a) Ae. triuncialis originated from the reciprocal crosses between Ae. caudata and Ae. umbellulata, and (b) the type 2b chloroplast genome was arisen from type 2a chloroplast genome by a 0·3 kbp insertion.
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Contribution No. 481 from the Laboratory of Genetics, Faculty of Agriculture, Kyoto University, Japan. The work was partly supported by a Grant-in-Aid (No. 60400005) from the Ministry of Education, Science and Culture, Japan.
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Murai, K., Tsunewaki, K. Molecular basis of genetic diversity among cytoplasms of Triticum and Aegilops species. IV. CtDNA variation in Ae. triuncialis. Heredity 57, 335–339 (1986). https://doi.org/10.1038/hdy.1986.132
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DOI: https://doi.org/10.1038/hdy.1986.132
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